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Oshkosh HEMTT

Heavy high-mobility truck

Oshkosh HEMTT

The Oshkosh HEMTT heavy truck is rapidly deployable and can operate in any climatic conditions

 
 
M977
Entered service 1982
Configuration 8x8
Cab seating 1 + 1 men
Dimensions and weight
Weight (empty) 17.6 t
Maximum load 10 t
Length 10.2 m
Width 2.6 m
Height 2.4 m
Mobility
Engine Detroit Diesel 8V92TA diesel
Engine power 450 hp
Maximum road speed 100 km/h
Range 640 km
Maneuverability
Gradient 60%
Side slope 30%
Vertical step ~ 0.6 m
Trench ~ 2 m
Fording 1.2 m

 

   The HEMTT or Heavy Expanded Mobility Tactical Truck is a family of 8x8 heavy high-mobility trucks produced by Oshkosh and used by the US military. The HEMTT entered service with the US Army in 1982 and replaced the ageing M520 Goer. Over 15 000 of these high mobility trucks were built. These are also referred as Family of Heavy Tactical Vehicles or FHTV. These vehicles are rapidly deployable and are designed to operate in any climatic conditions.

   There are a number of variants of the HEMTT trucks, built on a similar chassis and equipped to perform different missions. These high mobility trucks are used by the US military to perform local and line haul, unit ressuply and related tactical missions.

   Cab of the HEMTT accommodates driver and one passenger. It may be fitted with add-on armored kit. It protects the crew from 7.62-mm rounds and artillery shell fragments. Vehicle has a machine gun mount on top of the roof.

   Vehicle is powered by the Detroit Diesel 8V92TA turbocharged diesel engine, developing 450 hp.  Engine is located behind the cab. Such layout allowed to reduce overall height of the vehicle. Engine is coupled to an automatic transmission. First two axles are steered. This military truck has 8x8 configuration, however it can be switched to 8x4 on hard surface roads for maximum speed and range. Vehicle has great cross-country mobility. A self-recovery winch is available on certain models. After preparation the Oshkosh HEMTT can be airlifted by the C-130, C-17, C-141 or C-5 transport aircraft.

   There are a number of models in this family of heavy tactical vehicles.

 

Variants

 

   M977 cargo truck, fitted with material handling crane. It is a baseline version, produced in large numbers;

   M978 fuel tanker;

   M983 tractor truck;

   M984 wrecker;

   M985 cargo truck, fitted with material handling crane, but has lighter load rating both for the truck and the crane;

   M1074 / M1075 PLS (Palletized Load System), a 10x10 variant of the HEMTT, fitted with a load handling equipment;

   M1120 LHS (Load Handling System), fitted with load handling equipment;

   M1142 tactical firefighting truck;

   M1977 bridge transporter;

   Mk.48 LVS or Logistics Vehicle System is an articulated 8x8 vehicle, used by the US Marine Corps. This tactical truck is nicknamed the Dragon Wagon;

   HEMTT A3 upgrade, significantly increasing capabilities and performance. It is fitted with Cummins 400 hp diesel engine, with better fuel economy. This variant has an integrated armored cab;

   HEMTT A4 upgrade fitted with Caterpillar 500 hp diesel engine, cab armor and some other improvements.

 

Video of the Oshkosh HEMTT A3 heavy utility truck

 
Oshkosh M977 HEMTT

Oshkosh M977 HEMTT

Oshkosh M985 HEMTT

Oshkosh M978 HEMTT

Oshkosh M984 HEMTT

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